Results 101 to 110 of about 251,773 (344)

Quantum nondemolition measurements of a flux qubit coupled to a noisy detector

open access: yes, 2011
We theoretically study the measurement-induced dephasing caused by back action noise in quantum nondemolition measurements of a superconducting flux qubit which is coupled to a superconducting quantum interference device (SQUID).
Jiang, Wei, Wei, Lianfu, Yu, Yang
core   +1 more source

Understanding Decoherence of the Boron Vacancy Center in Hexagonal Boron Nitride

open access: yesAdvanced Functional Materials, EarlyView.
State‐of‐the‐art computations unravel the intricate decoherence dynamics of the boron vacancy center in hexagonal boron nitride across magnetic fields from 0 to 3 T. Five distinct regimes emerge, dominated by nuclear spin interactions, revealing optimal coherence times of 1–20 µs in the 180–350 mT range for isotopically pure samples.
András Tárkányi, Viktor Ivády
wiley   +1 more source

Оценка возможности применения квантовой криптографии в сетях межбанковского обмена данными

open access: yesФінансово-кредитна діяльність: проблеми теорії та практики, 2014
В статье приводиться краткий анализ квантовых сетей, а также сравнительные данные по определению сложности взлома  алгоритмов на классических компьютерах и на компьютерах с использованием квантовых вычислений.
Ю. И. Кобылина
doaj  

Solving Combinatorial Optimization Problems on Quantum Computers

open access: yesКібернетика та комп'ютерні технології, 2020
Introduction. Quantum computers provide several times faster solutions to several NP-hard combinatorial optimization problems in comparison with computing clusters.
Vyacheslav Korolyov   +1 more
doaj   +1 more source

High coherence hybrid superconducting qubit

open access: yes, 2010
We measure the coherence of a new superconducting qubit, the {\em low-impedance flux qubit}, finding $T_2^* \sim T_1 \sim 1.5\mu$s. It is a three-junction flux qubit, but the ratio of junction critical currents is chosen to make the qubit's potential ...
DiVincenzo, David P.   +6 more
core   +1 more source

Narrow Inhomogeneous Distribution and Charge State Stabilization of Lead‐Vacancy Centers in Diamond

open access: yesAdvanced Functional Materials, EarlyView.
Lead‐vacancy (PbV) centers in diamond are expected to be a building block of quantum network nodes owing to a large ground state splitting, which suppresses phonon interaction. In this study, multiple PbV centers with nearly identical photon frequencies and stable charge state are fabricated by high‐pressure and high‐temperature anneal up to 2300 °C ...
Ryotaro Abe   +7 more
wiley   +1 more source

Metastable Superconducting Qubit [PDF]

open access: yesPhysical Review Letters, 2010
We propose a superconducting qubit design, based on a tunable RF-SQUID and nanowire kinetic inductors, which has a dramatically reduced transverse electromagnetic coupling to its environment, so that its excited state should be metastable. If electromagnetic interactions are in fact responsible for the current excited-state decay rates of ...
openaire   +4 more sources

Ice Lithography: Recent Progress Opens a New Frontier of Opportunities

open access: yesAdvanced Functional Materials, EarlyView.
This review focuses on recent advancements in ice lithography, including breakthroughs in compatible precursors and substrates, processes and applications, hardware, and digital methods. Moreover, it offers a roadmap to uncover innovation opportunities for ice lithography in fields such as biological, nanoengineering and microsystems, biophysics and ...
Bingdong Chang   +9 more
wiley   +1 more source

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